HV120 Standalone Receiver DVB-T

 

HV-122 is a 1080 Full HD diversity receiver box which receives and decodes DVB-T (ETSI EN 300 744) HD/SD terrestrial broadcast signals. It features the video output of HDMI and Composite (CVBS) for DVB-T.

HV-122 is designed with 2-way diversity antenna reception, which can enhance high mobility support and mitigate multi-path effect.

Besides remote controller, HV-122 can be configured and controlled thru its UART port by an external host.

HV-122 can decode the mux’ed UART data in received streams and output thru its local UART port.

Besides standard TV channel bandwidth (5/6/7/8MHz), HV-122 can tune 1/1.5/2/2.5/3/4 MHz bandwidth channels.

Depending on the model options, HV-122 supports standard TV-band (170-860MHz), 2.4G-band (2100~2550MHz), All-band (170~2700MHz)

Features

• Standalone Digital DVB-T receiver
• Support 1080 Full HD H.264 and MPEG2 decoding
• Frequency Band Support
• HV-122-TV 170~860MHz
• HV-122-2.4G 2100~2550MHz
• HV-122-A 170~2700MHz (Sensitivity is ~20dB less at 170~700MHz)
• Two Antenna SMA connectors
• Composite video output/ Stereo Analog (L/R) output
• Digital HDMI audio and video output
• On-Screen Display Menu
• Automatic or manual channel scan
• 1/1.5/2/2.5/3/4/5/6/7/8 MHz Bandwidth support
• 12V active antenna supported (up to 500mA)
• Demultiplex UART data in received TS transmitted by Hides transmitter.
• Decrypt encrypted TS data transmitted by Hides transmitter.

Model Number	RF-in filter for >1GHz band	Frequency Band Supported
HV-122	N/A	170~862 MHz
HV-122-2.4G	2.4G Saw Filter*	2100~2550MHz*
HV-122-A	N/A	170~2700MHz**
l  *There is a saw filter in the RF front end. The saw filter limits the reception range but minimize ACI (adjacent channel interference) l  **When the saw filter removed, full band range is supported but poorer ACI. The sensitivity is ~20dB less at 170~700MHz.

Specifications：

RF Inputs
Frequency	HV-122: 170~862 MHz
	HV-122-2.4G: 2100~2550MHz
	HV-122-A: 170~2700MHz
Bandwidth	Single Antenna	1/1.5/2/2.5/3/4/ 5/6/7/8 MHz
	Diversity Antenna	2.5/3/4/ 5/6/7/8 MHz
Demodulation	COFDM (ETSI EN 300 744 DVB-T)
FFT mode	2K, 4K, 8K
Constellation	QPSK, 16QAM, 64QAM
Guard interval	1/4, 1/8. 1/16, 1/32
Inner coding rate	1/2, 2/3, 3/4, 5/6, 7/8
RF  Performance (single antenna only) For HV-122-TV* Pmax >+5 dBm Pmin @ FFT:2K, 16QAM,CR:2/3 GI:1/8   Bandwidth Sensitivity 1 MHz <-99 dBm 1.5 MHz <-98 dBm 2 MHz <-96 dBm 2.5 MHz <-95 dBm 3 MHz <-95 dBm 4 MHz <-94 dBm 5 MHz <-92 dBm 6 MHz <-91 dBm 7 MHz <-90 dBm 8 MHz <-90 dBm Mobility TU6/RA6/Doppler Performance

Video
Formats	MPEG-2 MP@ML, MPEG-2 MP@HL MPEG4 AVC/H.264 MP@L4.1, MPEG4 AVC/H.264 HP@L4.1
Output	Digital HD video, CVBS
Aspect ratio	4:3 and 16:9 (Letter Box, Pan & Scan)
Audio
Decode	MPEG-1 layer I/II, MP3, MPEG-2 layer II, MPEG-2 AAC, MPEG-4 HE-AAC
Sampling rate	32KHz, 44.1KHz, 48KHz
Output	Stereo line-out and HDMI digital output
Front panel
IR remote 7-segment LED display: Status LED :Power and Channel lock status
Rear panel
Power-in (DC Jack or Micro-USB) Two SMA RF-in CVBS/Audio-L/Audio-R Jack Digital HD video

Power Supply	HV-122-TV	12 VDC Typical Consumption 5.4 Watt (450mA)
	HV-122-2.4G HV-122-A	12 VDC Typical Consumption 6.48 Watt (540mA)
Dimension	W(105 mm) x D(75 mm) x H(35 mm) (Bare bone PCBA size: 100mmx70mm)
Weight	185g (Bare bone PCBA weight 65g)

In diesen Test ist deutlich die erreichbare Empfindlichkeit zu sehen, die erreicht man nur mit HiDes Empfängern.... alle andere zeigen um 14~20dB weniger Empfindlichkeit, von dvb-s Empfängern gar nicht zu reden ( -80dBm ... -40dBm ). Mit einem guten rauscharmen Vorverstärker direkt bei der Antenne ist fast die Empfindlichkeit von FM Handfunkgeräten erreichbar die mit 5kHz Hub arbeiten -123dBm. Hier ist auch nicht zu übersehen unterschied zwischen 2 und 8MHz Bandbreite, der kann oft entscheiden zwischen Bild und kein Bild.
In this test is clearly achievable sensitivity to see which one achieved only Hides all other receivers .... show 14 ~ 20dB less sensitivity, to say nothing of DVB-S receivers (-80dBm -40dBm ...) , With a good low-noise preamplifier directly at the antenna is almost the sensitivity of FM handheld radios reachable working with 5kHz Hub -123dBm. This is also not to be overlooked difference between 2 and 8 MHz bandwidth, which can often decide between picture and no picture.
Endlich ist auch die 23cm und 13cm Band empfindlichkeit gemessen worden und die siehts so aus:
Finally, the 23 cm and 13 cm band has been measured sensitivity and looks like this:
Reception threshold at 1265MHz is on -85dbm ( 3MHz BW , 16QAM , GI1/4 , FEC2/3 , Trans.mode 2K )
Reception threshold at 2402MHz is on -84,8dBm ( 3MHz BW , 16QAM , GI1/4 , FEC2/3 , Trans.mode 2K )
Note: data refer to the from me measured receiver !!.
Eingangsbereich 1GHz......2,6GHz verwendet gleiche Schaltung wie Downconverter BD300
Input 1GHz.......2,6GHz uses the same circuit as downconverter BD300

Genauso wie HV110 , durch aufnahme möglichkeit on board.... ein optimales Empfänger für Contest betrieb oder Nachweiss von Verbindungen ( kein schleppen von Videorecorder mehr ).....,
gleich anschließend ist es möglich gerade aufgenommene audiovideo datei sofort abzuspielen.
Just like HV110, operation by recording capability on board .... an optimal receiver for Contest and QSO archiving ( no lugging of VCR more  )..... immediately afterwards, it is possible just recorded audio video file to play immediately.

Umsetzer bauer und Verantwortlicher, auch dieser Receivertype hat eine zweifunktion LED diode, die bietet sich optimal als quelle für Relesteuerung.
Neuheit in On screen display: Frequenzanzeige mit aktuelle Signalbandbreite.
Repeater builders and responsible, also this receiver type has a two-function LED diode, which provides ideal as a source for repeater control
Newness in On Screen Display: RX Frequency with actual signal bandwidth
Decrypt Key möglichkeit für verschlüsselte Sendungen ist in software auch eingebaut ( nur für HiDes TX produkte )
Decrypt Key option for encrypted broadcasts is also built into software ( only for HiDes TX product )
Für Signale die über den UHF Eingang ( 100....950MHz ) rein kommen und stärker als -10dBm sind, ist auf Pcb ein zuschaltbare 25dB attenuator eingebaut.
For the signals on the UHF input (100 .... 950MHz) and stronger than -10dBm, a switchable 25dB attenuator is built on PCB
In Autoscan mode.... Bereits vorprogramierte HamRadio frerquenzen wie bei HV110
In Autoscan mode...... Already preprogrammed Ham radio frequencies , see pdf file "Receiver Box QIG"

Connector problem is also eliminated... now is possible to use both outputs simultaneously !!

You can buy it here:        https://www.ebay.com/str/HiDes168